Rhenium Extraction Results

Solvent extraction of rhenium from molybdenum in alkaline ...

01/07/2009  The results show that the mixture of 20% triotylamine and 30% tributyl phosphate diluted kerosene oil is selective extractant of rhenium with respect to molybdenum. It extracted molybdenum with extraction efficiency of 1.7%, while rhenium was

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Solvent extraction of rhenium from molybdenum in alkaline ...

The results show that the mixture of 20% triotylamine and 30% tributyl phosphate diluted kerosene oil is selective extractant of rhenium with respect to molybdenum. It extracted molybdenum with extraction efficiency of 1.7%, while rhenium was extracted with efficiency of 96.8%, and separation coefficient β Re/Mo is relatively good (1.7 × 10 3 ).

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Extractive Separation of Rhenium by Procedure Complexation ...

With 0.5 ml of 3% hexamine, the extraction of rhenium is 8()o;~)w,hich increases to 87% for 1.5-2.5 ml of the reagent and, thereafter, shows a downward trend. Therefore, 1.5-2.5 mlofthe reagent isrequired for optimum extraction (Table 1). It isevident from the above data that for ~ 100 I-Lg Re and other metal ions the optimum conditions are 1.4-1.65 M HCl, reduction with 150-250 mg hydra-zine ...

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(PDF) Extractive Metallurgy of Rhenium: A Review

Several conventional extraction methods, such as precipitation, ionexchange and solvent extraction, have been applied for separation of rhenium during the past decades (Abisheva et al., 2011 ...

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Recent advances of rhenium separation and enrichment in ...

The results showed that the mixture of TOA (20%) and TBP (30%) diluted in kerosene was an efficient selective extract system (pH of 9.0 for the feed solution, room temperature, phase ratio 1:1), whose extraction efficiency of molybdenum was 1.7%, of rhenium was 96.8%, and the separation coefficient β Re/Mo was quite good (1.7 × 10 3). In addition, for the stripping process of rhenium into ...

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Rhenium and Molybdenum Separating Technology in

28/08/2020  Up to now, the Hubei Provincial Geological Experiment and Testing Center has obtained 6 national patents in the research of "Three Rare" resources including the rhenium extraction technology, 4 first-level national standard materials and a batch of polymetallic ore standard materials, and the related results have filled the industry gap.

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Sustainable Extraction and Separation of Rhenium and ...

Previously reported results on the mechanism of ATPS formation with CuSO 4 in the presence of MoO 4 2− and ReO 4 −, respectively, as a function of pH and temperature serve as the basis for this work.16,17 In the ATPS composed of CuSO 4-PEG 4000-H 2 O, a maximal molybdenum extraction of 93% was achieved in the pH range 1.5−2.5 at T = 35 °C.17 In contrast, temperature and pH did not have ...

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Extractive Separation of Rhenium by Procedure Complexation ...

With 0.5 ml of 3% hexamine, the extraction of rhenium is 8()o;~)w,hich increases to 87% for 1.5-2.5 ml of the reagent and, thereafter, shows a downward trend. Therefore, 1.5-2.5 mlofthe reagent isrequired for optimum extraction (Table 1). It isevident from the above data that for ~ 100 I-Lg Re and other metal ions the optimum conditions are 1.4-1.65 M HCl, reduction with 150-250 mg hydra-zine ...

More

Recent advances of rhenium separation and enrichment in ...

The results showed that the mixture of TOA (20%) and TBP (30%) diluted in kerosene was an efficient selective extract system (pH of 9.0 for the feed solution, room temperature, phase ratio 1:1), whose extraction efficiency of molybdenum was 1.7%, of rhenium was 96.8%, and the separation coefficient β Re/Mo was quite good (1.7 × 10 3). In addition, for the stripping process of rhenium into ...

More

Sustainable Extraction and Separation of Rhenium and ...

Previously reported results on the mechanism of ATPS formation with CuSO 4 in the presence of MoO 4 2− and ReO 4 −, respectively, as a function of pH and temperature serve as the basis for this work.16,17 In the ATPS composed of CuSO 4-PEG 4000-H 2 O, a maximal molybdenum extraction of 93% was achieved in the pH range 1.5−2.5 at T = 35 °C.17 In contrast, temperature and pH did not have ...

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The method of extraction of rhenium

From the results shown in the table.4, it follows that the use of the claimed method of extraction of rhenium from solutions will: - to provide a high degree of extraction of rhenium from poor solutions; - to reduce the duration of the technological cycle sorption - regeneration rhenium up to 2 hours; - due to low losses in EP cycles to reduce the cost of recovery of rhenium from solutions ...

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Tsvetnye Metally Rhenium and platinum extraction from dead ...

The degree of extraction of valuable components for the burnt and not burnt catalyst are practically equal (platinum – 87.2%, rhenium – 84.1% and platinum – 89.1%, rhenium – 87.5% accordingly), however for processing of the burnt catalysts are necessary more long time of their finding in a reactionary zone on 8-10 hours. Dependence of degree of extraction on time of process of ...

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Rhenium and Molybdenum Separating Technology in

28/08/2020  Up to now, the Hubei Provincial Geological Experiment and Testing Center has obtained 6 national patents in the research of "Three Rare" resources including the rhenium extraction technology, 4 first-level national standard materials and a batch of polymetallic ore standard materials, and the related results have filled the industry gap.

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The hydrometallurgical extraction of rhenium from

25/10/2008  The hydrometallurgical extraction of rhenium from copper industrial wastes. Ashraf Amer 1 JOM volume 60, pages 52 – 54 (2008)Cite this article. 281 Accesses. 6 Citations. Metrics details. Abstract. An attempt has been made in this investigation to develop a wet chemical method for treating a rhenium-containing lead slime produced during copper manufacture. The effects of temperature,

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Rhenium: The Expensive Metal With An Important Use ...

11/01/2018  Chile and the United States lead the global extraction of rhenium followed by countries that include Poland and Peru. It is estimated that 50 tons per year are produced. While it isn’t as rare as osmium (50 parts per trillion) it is much more easily extracted. Since rhenium is malleable, it has garnered high usages for its melting and boiling points. Uses of Rhenium. By far the most widely ...

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Powder processing and the fabrication of rhenium ...

In the past few years, the interest in rhenium and rhenium-containing alloys has increased. This interest is primarily due to results from investigations being carried out for high-temperature and space-reactor applications. High-purity rhenium metal has the potential to be used in larger quantities than ever before. These applications include rhenium in its pure form as well as in alloys with ...

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Rhenium - Wikipedia

Rhenium is a chemical element with the symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust. Rhenium has the third-highest melting point and second-highest boiling point of any stable element at 5903 ...

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Extractive Separation of Rhenium by Procedure Complexation ...

With 0.5 ml of 3% hexamine, the extraction of rhenium is 8()o;~)w,hich increases to 87% for 1.5-2.5 ml of the reagent and, thereafter, shows a downward trend. Therefore, 1.5-2.5 mlofthe reagent isrequired for optimum extraction (Table 1). It isevident from the above data that for ~ 100 I-Lg Re and other metal ions the optimum conditions are 1.4-1.65 M HCl, reduction with 150-250 mg hydra-zine ...

More

Sustainable Extraction and Separation of Rhenium and ...

Previously reported results on the mechanism of ATPS formation with CuSO 4 in the presence of MoO 4 2− and ReO 4 −, respectively, as a function of pH and temperature serve as the basis for this work.16,17 In the ATPS composed of CuSO 4-PEG 4000-H 2 O, a maximal molybdenum extraction of 93% was achieved in the pH range 1.5−2.5 at T = 35 °C.17 In contrast, temperature and pH did not have ...

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Extraction of rhenium (VII) by tetraoctylammonium

01/06/2011  Results and discussion Results of studies on the extraction of rhenium by TOABHA-kerosene solution with the concentration of TOAB of 1à 10-2 m showed that quantitative extraction of metal is achieved at pH of 1.5 for 3 min of phase contact. The possibility of replacing the diluent kerosene with its chemical analog parafï¬ n was studied. The degree of extraction of rhenium (VII) on the ...

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Research of the rhenium sorption from the industrial ...

This article gives the results of testing of the anionite A170 of the “Purolite” Company for the sorption extraction of rhenium from the industrial solutions of washed sulfuric acid with its low concentration (13 mg/dm3). The results of rhenium elution from the anionite by ammonia water solution are also presented. The sorption indices of anionite are high: the volume of the missing ...

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Extraction process for recovery of rhenium - GTE Sylvania ...

For example, the molybdenum must be separated from the rhenium by roasting prior to the recovery of rhenium and that technique generally results in losses of up to about 50% of the rhenium present due to volatilization. Additionally, after the recovery of rhenium by the extraction processes mentioned, the raffinate discarded contains 0.01 grams Re/liter. This concentration is often higher than ...

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The hydrometallurgical extraction of rhenium from

25/10/2008  The hydrometallurgical extraction of rhenium from copper industrial wastes. Ashraf Amer 1 JOM volume 60, pages 52 – 54 (2008)Cite this article. 281 Accesses. 6 Citations. Metrics details. Abstract. An attempt has been made in this investigation to develop a wet chemical method for treating a rhenium-containing lead slime produced during copper manufacture. The effects of temperature,

More

Powder processing and the fabrication of rhenium ...

In the past few years, the interest in rhenium and rhenium-containing alloys has increased. This interest is primarily due to results from investigations being carried out for high-temperature and space-reactor applications. High-purity rhenium metal has the potential to be used in larger quantities than ever before. These applications include rhenium in its pure form as well as in alloys with ...

More

Rhenium – a valuable and rare element

Only certain ores contain traces of rhenium and its extraction takes place exclusively as a by-product of the processing of these ores. This makes it vitally important to recover this rare element by recycling used materials containing rhenium. Consistent quality and purity call for a high degree of expertise when it comes to the recovery of precious metals. Your requirements are our mission ...

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Study of Rhenium Bioaccumulation in Lucerne (Medicago) and ...

raw lucerne and by ethanol extraction of rhenium from green mass [5]. Both leaching 20- ml ammonia solutions were analyzed for Re content by the catalytic DMDTO method and for K, Ca, Mg and Cu, by FAAS method. Two portions of dry Dowex50Wx8 (1 g each) were soaked into distilled water for one night to allow the resin to swell. The swollen resin was separated from water and added to both 20-ml ...

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Rhenium: The Expensive Metal With An Important Use ...

11/01/2018  Chile and the United States lead the global extraction of rhenium followed by countries that include Poland and Peru. It is estimated that 50 tons per year are produced. While it isn’t as rare as osmium (50 parts per trillion) it is much more easily extracted. Since rhenium is malleable, it has garnered high usages for its melting and boiling points. Uses of Rhenium. By far the most widely ...

More

Extractive Separation of Rhenium by Procedure Complexation ...

With 0.5 ml of 3% hexamine, the extraction of rhenium is 8()o;~)w,hich increases to 87% for 1.5-2.5 ml of the reagent and, thereafter, shows a downward trend. Therefore, 1.5-2.5 mlofthe reagent isrequired for optimum extraction (Table 1). It isevident from the above data that for ~ 100 I-Lg Re and other metal ions the optimum conditions are 1.4-1.65 M HCl, reduction with 150-250 mg hydra-zine ...

More

Determination of rhenium in plant materials, Journal of ...

16/02/2005  The results of the extraction puri- Determination of rhenium under field condi- fication of Re given in Table 6 indicate that the recov- tions. A 2–3-g portion of fresh green matter (grass or ery of rhenium was higher than 99%. No rhenium activ- leaves) was triturated with ethanol in an agate mortar. ity was found in the liquid and solid ...

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Extraction of rhenium (VII) by tetraoctylammonium

01/06/2011  Results and discussion Results of studies on the extraction of rhenium by TOABHA-kerosene solution with the concentration of TOAB of 1à 10-2 m showed that quantitative extraction of metal is achieved at pH of 1.5 for 3 min of phase contact. The possibility of replacing the diluent kerosene with its chemical analog parafï¬ n was studied. The degree of extraction of rhenium (VII) on the ...

More

Research of the rhenium sorption from the industrial ...

This article gives the results of testing of the anionite A170 of the “Purolite” Company for the sorption extraction of rhenium from the industrial solutions of washed sulfuric acid with its low concentration (13 mg/dm3). The results of rhenium elution from the anionite by ammonia water solution are also presented. The sorption indices of anionite are high: the volume of the missing ...

More

What's Rhenium Doing in a Jet Engine? Science Features ...

30/01/2018  As a result, mining rhenium is neither cheap nor easy. However, progress in both mining technology and geological surveys have made it possible to locate veins with considerable rhenium content, which has decreased the overall extraction price for mining firms. Nevertheless, surging demand for rhenium, driven by its desirable qualities, means ...

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Rhenium Market Global Industry Report, 2030

Extraction of rhenium takes place in an exclusive manner as a by-product of the processing of these ores. It is important to recover rhenium through recycling of used materials that contain it. It is one of the precious metal, which requires high degree of expertise for its quality and purity. Rhenium is considered a green element in aerospace applications, as it is used in hot zones of jet ...

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Separation of Rhenium (VII) and Vanadium (V) from ...

The obtained results can be utilized to develop a process for separating Re(VII) and V(V) from HCl solutions. †(Received February 1, 2017; Accepted July 2, 2017) Keywords: separation, rhenium, vanadium, tributyl phospate, solvent extraction 1. INTRODUCTION Rhenium (Re) is widely used in oil refinery industries and the production of super alloys for high-temperature applications [1], while ...

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Solvent Extraction of Technetium(VII) and Rhenium(VII ...

Solvent Extraction of Technetium(VII) and Rhenium(VII) Using a Hexaoctylnitrilotriacetamide Extractant Kojiro SHIMOJO,*,** ... Results and Discussion The extraction behavior of ReO4 − with four different extractants as a function of pH in aqueous phase is shown in Fig. 2(a). In the HONTA system, the extractability of ReO4 − improved with an increase in acidity from neutral aqueous solution ...

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Rhenium – a valuable and rare element

Only certain ores contain traces of rhenium and its extraction takes place exclusively as a by-product of the processing of these ores. This makes it vitally important to recover this rare element by recycling used materials containing rhenium. Consistent quality and purity call for a high degree of expertise when it comes to the recovery of precious metals. Your requirements are our mission ...

More

Rhenium extraction method from solutions

The method is suggested for extraction the rhenium from sulphate - nitrate solutions with uranium containing, iron and rhenium, including rhenium sorption with using weak basic anionite based on styrene and divinylbenzene marked CAP 200 and rhenium desorption with aqueous ammonia. Before rhenium desorption required anion is treated with sulfuric acid with concentration of 10-50 g / l,

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